stage may prove helpful.
When paralysis of the obturator nerve occurs as a post-partum
complication, and other conditions are favorable, the subject should be
raised to its feet without unnecessary delay. If the mare is unable to
assist in regaining her feet, a sling is required. Usually little else
is necessary and after a few days in the sling the subject can get about
unassisted. In the meanwhile the well-being of the affected animal is to
be considered just as in any other case where the patient is so
confined. The foal in such instances constitutes a source of some
trouble, but the average mare offers no serious resistance to the
confinement occasioned by the sling.
Good hygienic care, a suitable diet and full physiological doses of
strychnin are indicated. Cadiot and Almy recommend vaginal douches of
cold water and counterirritation of the region of the inner thigh in
these cases.
Paralysis of the Sciatic Nerve.
Anatomy.--The great sciatic nerve leaves the pelvis in company with
the gluteal nerves, through the great sciatic foramen (notch), passing
downward along the posterior face of the femur. Near the stifle it
passes between the two heads of the gastrocnemius muscle and continues
as the tibial. Branches supply the following muscles--obturator,
semimembranosus (adductor magnus), biceps femoris (triceps abductor
femoris), semitendinosus (biceps rotator tibialis), lateral extensor
(peroneus) and the tibial nerve, its continuation, innervates the
digital flexors.
Etiology and Occurrence.--Paralysis of the great sciatic nerve may be
caused by central disorders, injury in falling, fractures and new
growths. Because of its protected position, this nerve does not often
suffer injury, and paralysis of the sciatic nerve is recorded in a few
instances owing to its rarity.
Symptomatology.--When consideration is given the number of muscles
that are supplied by the sciatic nerve and the function of these
muscular structures, it is obvious that the leg cannot be used in
sciatic paralysis. However, the limb is capable of sustaining weight
when it is fixed in position, but this is done without exertion of
muscular fibers which are supplied by the great sciatic nerve. Trotting
is impossible and flexion of the affected member is also likewise
precluded. The foot is dragged when the subject is caused to advance.
Under the heading "sciatica," Scott[44] has described a case of acute
sciatic affection wherein a pa
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